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<h3 class="heading"><span class="type">Paragraph</span></h3>
<p>One could combine the results in 2 and 3, and get</p>
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\begin{equation*}
{\lambda_n}={\left(\frac{n\pi}{L}\right)^2},\quad {y_n(x)}={\cos\frac{n\pi x}{L}},\quad n=\textcolor{red}{0},1,2,3,\cdots
\end{equation*}
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<p class="continuation">Note that these are also a part of the trig set used in Fourier series! We will go to that part in the section <code class="code-inline tex2jax_ignore">[cross-reference to target(s) "sec7_3.ptx" missing or not unique]</code>.</p>
<span class="incontext"><a href="sec7_2.html#p-330" class="internal">in-context</a></span>
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